Question

There are 900 creatures in a zoo as per list given below :

$\begin{array}{ccccc}\text{Best animals}& \text{Other land}& \text{Birds}& \text{Water animals}& \text{Reptiles}\\ & \text{animals}& & & \\ 150& 400& 175& 125& 50\end{array}$

Represent the above data by a pie chart.

Answer 1

Total number of creatures = 900

$\begin{array}{ccc}\text{Creatures}& \text{No. of creatures}& \text{Central angle}\\ \text{Beast animals}& 150& \frac{150}{900}\times {360}^{\circ }={60}^{\circ }\\ \text{Other land animals}& 400& \frac{400}{900}\times {360}^{\circ }={160}^{\circ }\\ \text{Birds}& 175& \frac{175}{900}\times {360}^{\circ }={70}^{\circ }\\ \text{Water animals}& 125& \frac{125}{900}\times {360}^{\circ }={50}^{\circ }\\ \text{Reptiles}& 50& \frac{50}{900}\times {360}^{\circ }={20}^{\circ }\\ \text{Total}& 900& {360}^{\circ }\end{array}$

$\text{(i) Draw a circle with a suitable radius.}\text{(ii) Draw a horizontal radius.}\text{(iii) Starting from this radius, draw sectors whose central angles are}{60}^{\circ },{160}^{\circ },{70}^{\circ },{50}^{\circ }and{20}^{\circ }\text{respectively.}\text{(iv) Now shade each sector with different colours or designs as shown in the figure.}$